I just took a look at Park Chanye from Baidu. The information only shows that I graduated from modern high school in Gangnam-gu, Seoul, and then it's gone.

So he graduated from high school? Not really. If so,

That's for sure. Hua Chenyu has a high degree. Graduated from Wuhan Conservatory of Music with honors.

A high school and a university.

If Park Chang-yeh has a university, it's hard to compare. After all, countries are different, unless they are really top universities.